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Suppose a stock analyst wants to determine whether there is a difference in the mean rate of returns for three types of stock - utility, retail, and banking. Which parametric test would you recommend him/her to use - Z-test, t-test, F-test, ANOVA-one way design or ANOVA-two design? Why?
Company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. They are worried that the green color will adversely affect the tastiness scores.
What is the null hypothesis? What is your decision if a = 0.01?
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
Clearly identify the independent and dependent variables you would study, including the number of levels of the independent variable.
Which is the probability that the median of the sample is between $17 and $20?
The superintendent of a printing plant has selected a random sample of 100 rolls of paper from a large shipment. The average length of the sample rolls is 416 feet, with a variance of 2704 feet.
Discuss how graphical representations can be used to display data in a meaningful way. Choose a specific business application and describe an example of a specific graph or chart that can be used to interpret data and why it is so useful.
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
A researcher has been hired by a pizzeria to determine which type of crust customers prefer. The restaurant offers three types of crust: hand tossed, thick, and thin.
In a study of the consumer's view of the economy, the probability that a consumer would buy a house during the year was 0.0013, and the probability that the consumer would buy a car during the year was 0.198. There was also a 0.0100 probability t..
Where does the p-value come from for the spatial scan statistic used in SaTScan? Explain how Monte Carlo simulation is used to derive a p-value for a cluster.
Formulate the hypotheses that can be used to determine whether the mean of all account balances is significantly different from $1,150
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